How long did you wait after a positive HPT to go to the drs?

You can go now to get the blood work done to confirm, but most doctors won't see you again after that until you are at 12 weeks since there isn't much to do or see before then, and there is still a 15-20% chance of miscarriage. They usually won't do an ultrasound until 18-20 weeks unless they think something might be wrong or you have no idea how far along you are.